Note that the whole string is repeated for each element in the array. The answers are: 0.33 The answers are: 0.17 The answers are: 0.11 You can reuse a format string several times for multiple values sprintf( 'The answers are: %1.2f ', ) You can have more than one format string in a string, and then you have to have more than one value to pass to each format string. The value of 1/3 to two decimal places is 0.33 % Note that sprintf returns a string, that can be used in other % places. You can embed the format strings into a string a = sprintf( 'The value of 1/3 to two decimal places is %1.2f', n) To print with only two decimal places, consider these two examples n = 1/3 See the documentation for sprintf (doc sprintf) for much more detail. The field width is the minimum number of characters to print. A typical specifier for a decimal number is %w.df, where w is the width of the field, and d is the number of decimals, or precision. The sprintf command takes a string, with a format specifier in it, and replaces the format specifier with a numeric value.
% to reset the format to the default, simply call formatīut suppose you want to print results with the correct number of significant figures, which will vary. To show more decimals, you can issue a 'format long' command format long By default, Matlab shows decimal numbers on a fixed scale with 5 decimals. A crude way to control this is through the format command. ANSI specification X3.159-1989: " Programming Language C," ANSI, 1430 Broadway, New York, NY 10018.There are many times where you need to control the format of how variables are displayed in Matlab. Ritchie, The C Programming Language, Second Edition, Prentice-Hall, Inc., 1988. Line termination character on all platforms Left-justifies the converted argument in its field.Ī digit string specifying the minimum number of digits to be printed.Ī digit string including a period (.) specifying the number of digits to be printed to the right of the decimal point. Other characters can be inserted into the conversion specifier between the % and the conversion character. Hexadecimal notation (using uppercase letters A- F) Hexadecimal notation (using lowercase letters a- f)
The more compact of %e or %f, as defined in. Tables The following tables describe the nonalphanumeric characters found in format specification strings.Ĭonversion characters specify the notation of the output.Įxponential notation (using a lowercase e as in 3.1415e+00)Įxponential notation (using an uppercase E as in 3.1415E+00) Reinitializing, through any additional matrix arguments. It is then cycled in a similar manner, without Theįormat string is cycled through the elements of A (columnwise) until all theĮlements are used up.
sprintf is vectorized for the case when input matrix A is nonscalar. The underlying C data type is a double rather than an unsigned integer.įor example, to print a double-precision value in hexadecimal, use a formatĢ. The underlying C data type is a float rather than an unsigned integer. The following nonstandard subtype specifiers are supported for conversion Remarks The sprintf function behaves like its ANSI C language sprintf() namesake with certain exceptions and extensions. Returns an error message string errmsg if an error occurred or an empty matrix if an error did not occur. It can contain ordinary alphanumeric characters along with escape characters, conversion specifiers, and other characters, organized as shown below:įor more information see "Tables" and "References." = sprintf( format,A.) The format string specifies notation, alignment, significant digits, field width, and other aspects of output format. sprintf is the same as fprintf except that it returns the data in a MATLAB string variable rather than writing it to a file. Sprintf (MATLAB Function Reference) MATLAB Function Referenceįormats the data in matrix A (and in any additional matrix arguments) under control of the specified format string, and returns it in the MATLAB string variable s.